Improvement in combined high and low-water indicators



l which is hallowed out, as showuin lig. 2, and the jourl nal P passes through the center of said nut. It will declare that the following is a full, clear, and exact constructed as shown in tig. 1, one end heini,r rounded LEVI F. SMITH, OF PHILADELPHIA, PENNSYLVANIA.

Lettere Peteur No. 109,959, aerea Deee'mber e, 1870.

IMPROVEMENT IN COMBINED HIGH AND LOW-'WATER INDICATORS.

The Sciiiedule referred to in these Letters Patent and making part o the same.

To all whom it may concern:

Beit known that I, LEVI F. SMITH, of Philadelphia, in the county of Philadelphia and in the State of Pennsylvania, have invented certain new and useful Improvements in Combined Low and High-Water Indicator, XVater-Gauge, and Call-Whistle; and do hereby description thereof, reference being had tothe accompanying drawing and to thcletters of reference marked thereon making a part of this specification.

The nature of my invention consists in an improvement in low and high-water indicators for steamgenerators of any description, as will he hereinafter fully set forth.

In order to enable others skilled in the art to which my invention appertains tomake and use thesamc;A Iwill now proceed to describe its construction and operation, referring to the annexed drawing, in which- 1 Figure 1 is a side view of my machine, and

Figure 2 is a horizontal lsection 'showing the floatand its attachments.

G represents the shell ,or casing or' my machine,

and nearly semicircular, and haring in its center an opening, H, suitably closed by a cap and rubber packing for the insertion of the float.

At the opposite end of the casing isa screw, I, which can he readily taken out for the. purpose of cleaning out the casing when necessary.

At the under side of the rounded semicircular end of the casing is a peticock,'J, for the purpose of blowing out any sediment that may collect in this part oi the casing.

From the upper portionpt this rounded end of the casing a pipe, K, leads to a whistle, L, placed upon a' tube, M, near the other end of the easing. H V In the semicircular part of the easing G is placed ahollow ball or iloat, N, provided with a hollow` a'rm, O, which extends through the center of the casina, andbent as shown in tig. L.

From this bent portion of thcarnrO a hollow tube, I), extends, at right angles, through the ll'Ollii $111695 the casing forming the 'ournal, upon which lthe arm O turns.

In the front side ot' the casing. is inserted a nut, It,

he seen that IVthis journal has two bearings in the nut 1t, and at the' saine tijne the least possible amount of friction is created :IS the nut is hollowed out, as shown.

Upon the inner end of the journal l* is formed a conical bearing, a, which i.; pressed toward its seat or box in .the inner end of the nut lt by means of a spiral spring, l1, on the rear side of the bent portion of the arm O, said springr bcingheld in place by a screw, S, through the rear side of the casing.

;. The inner end of the spring b is, as shown, inserted in a hole or recess formed on the arm O, whereby very` little or no ti'iction is caused.

To the'renr end of the arm 0 is pivoted a lever, l. which is also suspended from a rod, d, connected willi thevalve c in the whistle L.

,The casing G is attached to a steam-generator, and forms connection at A witlrthe steam-space and at B with the water-space ol' the generator, said connections beiug so arranged that the point A will be above the high-water point and B below the low-water point. C, beingsupposed the economical point, or about the height to which the water should be carried, the float N will then bc in such a position with the arm 'l that the valve c 0i' the whistle will be closed.

On the outer cud of the journal is an indicator, V, which shows the state of the water in the boiler.

When the water rises the float N, of course, rises withit, and turns the1 arm 'l so that when the indicator shows the high-)vater point E, the rear cud of the arm will strike a point, f, within the casing, which point thus forms a newfulcrum for said arm, so that the valve c -in the whistle will be opened, and thus notify the engineer. In the same manner, when the water falls to the lowfwater point D, the inner end These points may he adjusted or changed at will,

by merely adjusting the connection between the arm or lever '.l andthe rodey d. A cord may be attached to the lever of the whistlevalve so that it may be used at any time as a common call-whistle Gauge-cocks a: x :e are attached to thc scmieircular part of the casing G, so that, in addition to the indicator, the state of the vater may be readily ascertained at any time by means of' said cocks. 'Ihcsc cocks are not placed directly above each other, but

`lmore to one side, so that the water will not drop ii-om one onlo the other. v

,The hollow nut R, as woll as the scrcwsl and S, are hollowcd out or recessed on the under or inner side, for the insertion ofsuitable packing to make steam fighi? J'UIIH'S By this means' it will not be necessary to malte the screw-threads So very tight, as this is always inconvenient ou account of the trouble to unscrew the saine. The packing on the outside of the screw-seat renders the joint perfectly steam-tight, and at the same time cnn be readily removed.

Having thus fully described my invention,

What I claim as new, :md desire to secure by Letters Patent, is-

1. In combination with the hollow easing G, the float N, hollow arm O, hollow journal P, indicntor V, lever T,fulcrums f g, and whistle-valve e, all constructed to operate substantially as set forth.-

2. The fulcrnxns f and g, arranged within the nns- 

